Finding the Fourth Proportional to 378,853.68, 568,105.56 and 142,026.96
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Solution
The fourth proportional to 378,853.68, 568,105.56 and 142,026.96 is: 212,974.85
Step by Step Solution
- Step 1: Write the proportion equation
378,853.68 : 568,105.56 = 142,026.96 : x - Step 2: Convert to fraction form
378,853.68/568,105.56 = 142,026.96/x - Step 3: Cross multiply
378,853.68x = 568,105.56 × 142,026.96 - Step 4: Simplify right side
378,853.68x = 80,686,305,645.90 - Step 5: Solve for x
x = 80,686,305,645.90/378,853.68 - Step 6: Final answer
x = 212,974.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.